<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册界面</title>
    <link rel="stylesheet" href="composition.css">
</head>

<body>
    <div class="container">
        <div class="box">
            <div class="title">
                注册系统
            </div>
            <div class="user">
                <span>用户名</span>
                <div class="rca">
                    <input type="text" placeholder="请输入用户名">
                    <p>用户名输入格式有误，请重新输入</p>
                </div>
            </div>
            <div class="pas">
                <span>密码</span>
                <div class="rca">
                    <input type="password" placeholder="请输入密码">
                    <p>密码输入格式有误，请重新输入</p>
                </div>

            </div>
            <div class="sure">
                <span>确认密码</span>
                <div class="rca">
                    <input type="password" placeholder="请确认密码">
                    <p>两次输入的密码不一致，请重新输入</p>
                </div>

            </div>
            <div class="phone">
                <span>手机号码</span>
                <div class="rca">
                    <input type="text" placeholder="请输入手机号码">
                    <p>手机号码输入有误，请重新输入</p>
                </div>

            </div>
            <div class="checkIn">
                注册
            </div>
        </div>
    </div>
</body>

</html>
<script src="outer.js"></script>